What We Do For Fun(zies)

We have a tradition at Sendwithus sort-of referred to as “Funzies Friday” – yeah, it’s a bit of a working title – but the idea is that every once in a while, we take a day and focus entirely on fun stuff we would like to see integrated into Sendwithus. Recently we took two days,

How to Use Template-specific Jinja Variables with Snippets

Recently, we received a question from a customer that prompted us to scratch our heads for a few seconds: “How can I use template-specific variables that aren’t passed into the data field of the API to send mail?” We did some research and devised a pretty simple and interesting solution.

Seed Funding

Today we’re excited to announce we’ve closed a $2.3 million seed funding round lead by Steve Anderson of Baseline Ventures. Others investing include Initialized Capital, SV Angel, Maiden Lane, Acequia Capital, and some amazing angel investors. You can check out the full list on Angel List. The goal of the funding (which closed earlier this summer) was to

Task Monitoring Using Redis

We’ve started using Redis a lot and it’s been great. We’ve already used it to improve performance in our analytics pipeline, and to power our usage-based billing system. Most recently we’ve written a leaner, faster version of our background task monitoring system based on Redis. Here’s how we did it…

Digging Into Data From 50M Transactional Emails

As part of our ongoing mission to help everyone send better emails, we recently took a random (and anonymous) sample of 50,000,000 transactional emails sent through Sendwithus and began to investigate the data. To start, we wanted to classify the purpose and intent of every email. We devised a hacky (and unimaginative) algorithm to sort each email

Sendwithus is Upgrading to Jinja

**UPDATED: See our latest Jinja v. Django Benchmarks, here** TL;DR – We’re switching to Jinja Templating. This won’t affect your existing templates and promises great new features to come. =] Since the beginning, Sendwithus has used the Django Templating Language to power your email templates. This decision came with a lot of advantages; Django Templating is

Announcing Sendwithus+Postmark Partnership

Sendwithus customers are amazing. We launched over a year ago and in that time we’ve met so many amazing marketers who wanted to take control of their transactional email. When you want to manage email templates outside of source code, we’ve got you covered with the best templating solution available. Bells and whistles like A/B Testing,