Compare Sup and LetterOpener's popularity and activity
|-||11 months ago|
|about 1 year ago||2 months ago|
|GNU General Public License v2.0 only||MIT License|
|Email, Communication, E-Mail Preview|
* Code Quality Rankings and insights are calculated and provided by Lumnify.
They vary from L1 to L5 with "L5" being the highest. Visit our partner's website for more details.