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Posts Tagged ‘high volume’

Enterprise-Grade High Volume Secure Email Sending API

Tuesday, February 4th, 2020

LuxSci has released an enhancement to its REST API targeted at fast, reliable, large-scale email sending.   While LuxSci’s API has had features for secure email sending for many years, the new API call is specifically designed with the needs of enterprise email sending in mind.

The new “Send Email” High Volume API call enables:

  1. Pipelining: Send up to 1,000 email messages per request
  2. Send to up to 1,000 email recipients per request
  3. Works for sending HIPAA-compliant secure email or regular email
  4. Load Balancing: Distributes your outbound email messages across your multiple dedicated outbound email servers.
  5. Fail Over: If you have multiple outbound email servers and one is down for some reason, the API will automatically re-try sending through other servers.
  6. Queuing: If you are depositing email into the API faster that your email servers can send, or if your email servers are down for some reason (e.g., maintenance), the messages will be accepted, queued, and delivered automatically as soon as possible.
  7. Tracking: Email delivery, bounce, click, feed-back loop, and open tracking works just like it does for messages sent via SMTP.
  8. Encryption and all other email sending features currently supported by direct SMTP sending (e.g., tag lines, encryption “Opt Out”, etc.) are supported by the API.
  9. SMTP Limits. Your overall API-based email sending is limited only by the number of recipients or messages to whom you are normally allowed to send via SMTP.

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Warming Up Your IP Addresses Automatically

Thursday, June 21st, 2018

When sending email messages, there are many best practices for ensuring optimal deliverability.   I.e., for getting your messages into your recipients’ Inboxes and for staying off black lists.  One very important factor in deliverability is “IP reputation.

Good reputation: If your server is known to send lots of good quality email (email that people do not consider spam-like), then your server’s address (its “IP Address”) is looked on favorably by ISPs (such as Yahoo!, Google, Microsoft, etc.) and you can send large quantities of good email and have it all delivered.  Your server has a good reputation and your server’s IP address is “warm” (think warmed up and humming a long).

Bad reputation: If your server is a known source of junk or malicious email (according to the recipients of the email — it doesn’t matter what you think about the email quality), then you will have a hard time getting your email delivered and many ISPs will throttle your email, accepting only a few messages a time.  Your server has a poor reputation and work will need to be done to repair it.

No reputation: If you just got a new server, it may not have been sending any email for a while.  Or, if you have a server but it has been idle for a long time (e.g, months).  In either case, your server’s address may have “no reputation.”  ISPs are very skeptical about email from servers with no reputation or recent history of good email sending.  A typical sign of a spammer is when a server with little or no reputation suddenly starts sending large quantities of email.  ISPs will detect this and they tend to quickly throttle or block such servers…. moving them from “no reputation” towards “bad reputation”.

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Case Study: Halloween Express Chooses LuxSci for Large Scale Seasonal Email Marketing

Monday, January 26th, 2015


Halloween Express
 is one of the most aggressive and dynamic Halloween chains in the United States. Started in 1990, Halloween Express has both company owned and franchised locations throughout the U.S. Their success is based on offering the largest selection of Halloween merchandise available anywhere.

Halloween Express chose LuxSci in 2014 for their massive seasonal email marketing needs.  LuxSci resolved the issues that they experienced with previous providers, saved them money, and enabled an extremely successful online campaign involving millions of email messages sent in a short period of time.

Halloween Express was very pleased that they could quickly scale up sending for the Halloween season, and then back off to a lower level for the rest of the year, without compromising their sending reputation.  They are so satisfied with their experience, that they are staying on for 2015 and are moving their business email services for their hundreds of employees over to LuxSci as well.

This is the story of Halloween Express’ timely switch to LuxSci’s dedicated High Volume SMTP Relaying service.

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Maximizing Delivery Speed and Reliability for Large Scale Email Marketing

Monday, September 8th, 2014

You need to send millions of messages to your large opt-in mailing list over the upcoming holiday season.  You need these messages to go out pretty quickly and to not get blocked by your recipient ISPs so that the maximum number of your (potential) customers get your marketing messages and thus you can maximize your conversion rates on these messages.

This is a common scenario that we see, often from customers who have been using another provider that is excessively expensive, where delivery is sluggish, and/or where their messages are getting blacklisted or grey listed by their recipient’s systems.

Here we will share with you our standard prescription for solving this delivery dilemma once and for all.  There are multiple important factors involved, each of which will contribute to your success.

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Why you should separate your business and your marketing email sending

Thursday, February 21st, 2013

A typical organization sends at least two very distinct classes of email messages: business email and marketing email.

Business email consists of all of the individual, personal messages sent by sales, support, billing and other departments to specific people.  These messages are generally more time sensitive; it is very important that the recipients actually receive them; these messages should not be filtered by any kind of spam filtering software, if possible.

Marketing email messages are similar messages sent in bulk to many people at once.  Examples of these include newsletters, notifications of blog updates, promotions and ads, status notices, etc.

In order for your business email to be as reliable as possible, the marketing email should be sent separately, through separate servers and maybe even on a separate domain name.  Here we will look at why.

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